You are the Network Administrator at a large company. Your company has a lot of contractors and other
outside parties that come in and out
of the building. For this reason you are concerned that simply having usernames and passwords is
not enough and want to have employees
use tokens for authentication. Which of the following is not an example of tokens?

A.
Smart card

B.
USB device with cryptographic data

C.
CHAP

D.
Key fob

Explanation:
Challenge Handshake Authentication Protocol (CHAP) is an authentication protocol
that periodically re-verifies the authentication. However, it
is about how to authenticate usernames/passwords, it is not related to tokens.
Answer options D, A, and B are incorrect. These are the examples of tokens. A token is a physical
item used to enhance security, usually
authentication. For example a key fob might have a randomly generated number that has to be
entered as well as the username password, in
order to logon. Another example is a smart card needed along with username and password to gain
access.